Author: Robert Hyatt
Date: 19:34:32 02/16/99
Go up one level in this thread
On February 16, 1999 at 16:26:53, James Robertson wrote: >My program keeps falling prey to king attacks. Although it does very well >tactically when it's king is not threatened, it frequently plays combinations >that win material (it thinks), only to find, say, a back-rank mate that went >unnoticed. I am using a one-reply-to-check extension, the mate extension after >null move, and extending half a ply whenever there is a check in the tree. No >check detection is done in the q-search. Are there any other standard check >extensions I am not doing? > >James Half a ply for check is very conservative. I use 1 ply for all checks, 3/4 ply for one-legal-reply-to-check... but speed is the main thing you need. Or else resorting to selective approaches to get the depth you need. Or else tuning your evaluation to protect your king better. The chess servers will _really_ help you do this, of course...
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.